/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 14:01:33,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 14:01:33,597 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 14:01:33,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 14:01:33,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 14:01:33,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 14:01:33,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 14:01:33,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 14:01:33,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 14:01:33,636 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 14:01:33,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 14:01:33,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 14:01:33,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 14:01:33,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 14:01:33,638 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 14:01:33,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 14:01:33,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 14:01:33,639 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 14:01:33,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 14:01:33,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 14:01:33,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 14:01:33,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 14:01:33,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 14:01:33,641 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 14:01:33,647 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 14:01:33,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 14:01:33,647 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 14:01:33,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 14:01:33,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 14:01:33,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 14:01:33,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 14:01:33,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 14:01:33,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 14:01:33,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 14:01:33,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 14:01:33,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 14:01:33,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 14:01:33,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 14:01:33,652 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 14:01:33,653 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 14:01:33,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 14:01:33,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 14:01:33,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 14:01:33,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 14:01:33,657 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 14:01:33,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 14:01:33,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 14:01:33,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 14:01:33,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 14:01:33,941 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 14:01:33,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c [2024-11-03 14:01:35,464 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 14:01:35,667 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 14:01:35,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c [2024-11-03 14:01:35,676 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdeab6291/53d876dde5a04e7e9dd8de1d9a649b79/FLAG6329a2c4e [2024-11-03 14:01:35,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdeab6291/53d876dde5a04e7e9dd8de1d9a649b79 [2024-11-03 14:01:35,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 14:01:35,692 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 14:01:35,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 14:01:35,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 14:01:35,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 14:01:35,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:35" (1/1) ... [2024-11-03 14:01:35,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34174296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:35, skipping insertion in model container [2024-11-03 14:01:35,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:35" (1/1) ... [2024-11-03 14:01:35,724 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 14:01:35,926 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c[3223,3236] [2024-11-03 14:01:35,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 14:01:35,949 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 14:01:35,986 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c[3223,3236] [2024-11-03 14:01:35,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 14:01:36,009 INFO L204 MainTranslator]: Completed translation [2024-11-03 14:01:36,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36 WrapperNode [2024-11-03 14:01:36,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 14:01:36,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 14:01:36,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 14:01:36,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 14:01:36,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,055 INFO L138 Inliner]: procedures = 20, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 182 [2024-11-03 14:01:36,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 14:01:36,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 14:01:36,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 14:01:36,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 14:01:36,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,102 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [2, 2, 3, 3]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 2, 1]. [2024-11-03 14:01:36,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 14:01:36,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 14:01:36,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 14:01:36,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 14:01:36,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (1/1) ... [2024-11-03 14:01:36,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 14:01:36,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 14:01:36,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 14:01:36,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 14:01:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 14:01:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2024-11-03 14:01:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2024-11-03 14:01:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2024-11-03 14:01:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2024-11-03 14:01:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2024-11-03 14:01:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2024-11-03 14:01:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2024-11-03 14:01:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2024-11-03 14:01:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 14:01:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 14:01:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-03 14:01:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-03 14:01:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 14:01:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 14:01:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 14:01:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-03 14:01:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-03 14:01:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 14:01:36,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 14:01:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-03 14:01:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-03 14:01:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-03 14:01:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-03 14:01:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 14:01:36,288 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 14:01:36,290 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 14:01:38,621 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-03 14:01:38,622 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 14:01:38,636 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 14:01:38,636 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-03 14:01:38,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:38 BoogieIcfgContainer [2024-11-03 14:01:38,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 14:01:38,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 14:01:38,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 14:01:38,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 14:01:38,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:01:35" (1/3) ... [2024-11-03 14:01:38,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a968de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:38, skipping insertion in model container [2024-11-03 14:01:38,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:36" (2/3) ... [2024-11-03 14:01:38,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a968de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:38, skipping insertion in model container [2024-11-03 14:01:38,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:38" (3/3) ... [2024-11-03 14:01:38,649 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2024-11-03 14:01:38,667 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 14:01:38,667 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 14:01:38,713 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 14:01:38,720 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d29b421, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 14:01:38,720 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 14:01:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:01:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-03 14:01:38,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:01:38,733 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:01:38,734 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:01:38,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:01:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2024-11-03 14:01:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:01:38,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062250258] [2024-11-03 14:01:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:01:38,751 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:01:38,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:01:38,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:01:38,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 14:01:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:01:38,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 14:01:38,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:01:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:01:38,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:01:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:01:38,863 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:01:38,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062250258] [2024-11-03 14:01:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1062250258] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:01:38,864 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:01:38,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 14:01:38,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992197149] [2024-11-03 14:01:38,867 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:01:38,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 14:01:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:01:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 14:01:38,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 14:01:38,900 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:01:38,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:01:38,921 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2024-11-03 14:01:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 14:01:38,923 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-03 14:01:38,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:01:38,932 INFO L225 Difference]: With dead ends: 104 [2024-11-03 14:01:38,933 INFO L226 Difference]: Without dead ends: 50 [2024-11-03 14:01:38,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 14:01:38,941 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 14:01:38,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 14:01:38,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-03 14:01:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-03 14:01:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:01:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-11-03 14:01:38,981 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2024-11-03 14:01:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:01:38,982 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-03 14:01:38,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:01:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2024-11-03 14:01:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-03 14:01:38,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:01:38,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:01:38,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 14:01:39,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:01:39,187 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:01:39,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:01:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2024-11-03 14:01:39,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:01:39,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897534319] [2024-11-03 14:01:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:01:39,189 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:01:39,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:01:39,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:01:39,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 14:01:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:01:39,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 14:01:39,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:01:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:01:39,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:01:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:01:57,830 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:01:57,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897534319] [2024-11-03 14:01:57,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [897534319] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:01:57,830 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:01:57,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2024-11-03 14:01:57,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64156258] [2024-11-03 14:01:57,830 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:01:57,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 14:01:57,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:01:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 14:01:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-03 14:01:57,833 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:01:59,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-03 14:02:03,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 14:02:07,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 14:02:13,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 14:02:14,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 14:02:19,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 14:02:22,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 14:02:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:02:22,657 INFO L93 Difference]: Finished difference Result 56 states and 76 transitions. [2024-11-03 14:02:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 14:02:22,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-03 14:02:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:02:22,659 INFO L225 Difference]: With dead ends: 56 [2024-11-03 14:02:22,659 INFO L226 Difference]: Without dead ends: 53 [2024-11-03 14:02:22,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-03 14:02:22,660 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 176 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2024-11-03 14:02:22,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 188 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 19.4s Time] [2024-11-03 14:02:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-03 14:02:22,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-11-03 14:02:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2024-11-03 14:02:22,668 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 9 [2024-11-03 14:02:22,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:02:22,668 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2024-11-03 14:02:22,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2024-11-03 14:02:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 14:02:22,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:02:22,669 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:02:22,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 14:02:22,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:22,870 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:02:22,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:02:22,870 INFO L85 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2024-11-03 14:02:22,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:02:22,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745277273] [2024-11-03 14:02:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:02:22,871 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:02:22,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:22,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:02:22,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 14:02:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:02:22,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 14:02:22,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:02:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:23,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:02:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:23,929 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:02:23,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745277273] [2024-11-03 14:02:23,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1745277273] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:02:23,929 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:02:23,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 14:02:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056661037] [2024-11-03 14:02:23,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:02:23,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 14:02:23,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:02:23,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 14:02:23,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 14:02:23,931 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:02:25,295 INFO L93 Difference]: Finished difference Result 101 states and 139 transitions. [2024-11-03 14:02:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 14:02:25,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-03 14:02:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:02:25,297 INFO L225 Difference]: With dead ends: 101 [2024-11-03 14:02:25,297 INFO L226 Difference]: Without dead ends: 57 [2024-11-03 14:02:25,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-03 14:02:25,299 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 132 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-03 14:02:25,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 97 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-03 14:02:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-03 14:02:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2024-11-03 14:02:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2024-11-03 14:02:25,311 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 12 [2024-11-03 14:02:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:02:25,311 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2024-11-03 14:02:25,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2024-11-03 14:02:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-03 14:02:25,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:02:25,312 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:02:25,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 14:02:25,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:25,513 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:02:25,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:02:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2024-11-03 14:02:25,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:02:25,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981014027] [2024-11-03 14:02:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:02:25,516 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:02:25,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:25,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:02:25,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 14:02:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:02:25,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 14:02:25,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:02:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:26,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:02:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:29,058 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:02:29,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981014027] [2024-11-03 14:02:29,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981014027] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:02:29,058 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:02:29,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2024-11-03 14:02:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351901459] [2024-11-03 14:02:29,059 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:02:29,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 14:02:29,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:02:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 14:02:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-03 14:02:29,060 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:02:30,649 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2024-11-03 14:02:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 14:02:30,650 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-03 14:02:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:02:30,650 INFO L225 Difference]: With dead ends: 60 [2024-11-03 14:02:30,650 INFO L226 Difference]: Without dead ends: 51 [2024-11-03 14:02:30,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-03 14:02:30,652 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 105 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-03 14:02:30,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 544 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-03 14:02:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-03 14:02:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-03 14:02:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-11-03 14:02:30,658 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2024-11-03 14:02:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:02:30,658 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-11-03 14:02:30,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-11-03 14:02:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 14:02:30,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:02:30,659 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:02:30,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 14:02:30,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:30,863 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:02:30,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:02:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2024-11-03 14:02:30,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:02:30,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508853243] [2024-11-03 14:02:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:02:30,864 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:02:30,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:30,865 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:02:30,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 14:02:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:02:30,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 14:02:30,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:02:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:31,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:02:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:31,117 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:02:31,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508853243] [2024-11-03 14:02:31,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [508853243] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:02:31,117 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:02:31,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 14:02:31,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917318762] [2024-11-03 14:02:31,118 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:02:31,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 14:02:31,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:02:31,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 14:02:31,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 14:02:31,121 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:02:31,477 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2024-11-03 14:02:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 14:02:31,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-03 14:02:31,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:02:31,478 INFO L225 Difference]: With dead ends: 84 [2024-11-03 14:02:31,478 INFO L226 Difference]: Without dead ends: 55 [2024-11-03 14:02:31,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 14:02:31,480 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 14 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 14:02:31,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 159 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 14:02:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-03 14:02:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-03 14:02:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-11-03 14:02:31,486 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 27 [2024-11-03 14:02:31,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:02:31,487 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-11-03 14:02:31,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-11-03 14:02:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-03 14:02:31,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:02:31,488 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:02:31,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-03 14:02:31,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:31,690 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:02:31,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:02:31,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1460519840, now seen corresponding path program 1 times [2024-11-03 14:02:31,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:02:31,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056253977] [2024-11-03 14:02:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:02:31,691 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:02:31,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:31,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:02:31,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 14:02:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:02:31,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 14:02:31,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:02:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:32,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:02:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:32,624 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:02:32,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056253977] [2024-11-03 14:02:32,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1056253977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:02:32,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:02:32,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 14:02:32,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630565033] [2024-11-03 14:02:32,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:02:32,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 14:02:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:02:32,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 14:02:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-03 14:02:32,626 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:33,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:02:33,637 INFO L93 Difference]: Finished difference Result 96 states and 131 transitions. [2024-11-03 14:02:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 14:02:33,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-03 14:02:33,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:02:33,639 INFO L225 Difference]: With dead ends: 96 [2024-11-03 14:02:33,639 INFO L226 Difference]: Without dead ends: 67 [2024-11-03 14:02:33,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-03 14:02:33,640 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 20 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-03 14:02:33,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 272 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-03 14:02:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-03 14:02:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-03 14:02:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 66 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2024-11-03 14:02:33,651 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 33 [2024-11-03 14:02:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:02:33,651 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2024-11-03 14:02:33,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2024-11-03 14:02:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-03 14:02:33,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:02:33,653 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:02:33,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-03 14:02:33,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:33,855 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:02:33,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:02:33,855 INFO L85 PathProgramCache]: Analyzing trace with hash -670380384, now seen corresponding path program 2 times [2024-11-03 14:02:33,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:02:33,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453334154] [2024-11-03 14:02:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:02:33,856 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:02:33,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:33,857 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:02:33,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 14:02:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:02:33,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 14:02:33,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:02:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:35,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:02:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:37,185 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:02:37,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453334154] [2024-11-03 14:02:37,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1453334154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:02:37,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:02:37,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-03 14:02:37,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960530898] [2024-11-03 14:02:37,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:02:37,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 14:02:37,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:02:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 14:02:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2024-11-03 14:02:37,189 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:39,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:02:39,918 INFO L93 Difference]: Finished difference Result 120 states and 167 transitions. [2024-11-03 14:02:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 14:02:39,919 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-03 14:02:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:02:39,920 INFO L225 Difference]: With dead ends: 120 [2024-11-03 14:02:39,920 INFO L226 Difference]: Without dead ends: 91 [2024-11-03 14:02:39,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2024-11-03 14:02:39,921 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 39 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-03 14:02:39,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 282 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-03 14:02:39,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-03 14:02:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-03 14:02:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 90 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2024-11-03 14:02:39,930 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 45 [2024-11-03 14:02:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:02:39,930 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2024-11-03 14:02:39,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2024-11-03 14:02:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-03 14:02:39,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:02:39,932 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:02:39,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 14:02:40,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:40,135 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:02:40,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:02:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash 337339552, now seen corresponding path program 3 times [2024-11-03 14:02:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:02:40,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81601889] [2024-11-03 14:02:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:02:40,135 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:02:40,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:40,136 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:02:40,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 14:02:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:02:40,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 14:02:40,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:02:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:44,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:02:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:02:50,277 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:02:50,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81601889] [2024-11-03 14:02:50,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [81601889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:02:50,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:02:50,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2024-11-03 14:02:50,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119159232] [2024-11-03 14:02:50,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:02:50,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-03 14:02:50,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:02:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-03 14:02:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=629, Unknown=0, NotChecked=0, Total=992 [2024-11-03 14:02:50,280 INFO L87 Difference]: Start difference. First operand 91 states and 120 transitions. Second operand has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:02:58,042 INFO L93 Difference]: Finished difference Result 144 states and 199 transitions. [2024-11-03 14:02:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-03 14:02:58,043 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-03 14:02:58,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:02:58,045 INFO L225 Difference]: With dead ends: 144 [2024-11-03 14:02:58,045 INFO L226 Difference]: Without dead ends: 115 [2024-11-03 14:02:58,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=363, Invalid=629, Unknown=0, NotChecked=0, Total=992 [2024-11-03 14:02:58,046 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 66 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-03 14:02:58,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 450 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-03 14:02:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-03 14:02:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-03 14:02:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.3333333333333333) internal successors, (152), 114 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 152 transitions. [2024-11-03 14:02:58,060 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 152 transitions. Word has length 69 [2024-11-03 14:02:58,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:02:58,061 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 152 transitions. [2024-11-03 14:02:58,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:02:58,061 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 152 transitions. [2024-11-03 14:02:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-03 14:02:58,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:02:58,063 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:02:58,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 14:02:58,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:58,264 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:02:58,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:02:58,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1833564832, now seen corresponding path program 4 times [2024-11-03 14:02:58,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:02:58,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057874578] [2024-11-03 14:02:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:02:58,265 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:02:58,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:02:58,266 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:02:58,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 14:02:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:02:58,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 14:02:58,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:03:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-03 14:03:00,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:03:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-03 14:03:02,608 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:03:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057874578] [2024-11-03 14:03:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2057874578] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:03:02,609 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:03:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 14:03:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039561891] [2024-11-03 14:03:02,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:03:02,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 14:03:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:03:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 14:03:02,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 14:03:02,611 INFO L87 Difference]: Start difference. First operand 115 states and 152 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:03:03,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:03:03,532 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2024-11-03 14:03:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 14:03:03,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-03 14:03:03,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:03:03,534 INFO L225 Difference]: With dead ends: 149 [2024-11-03 14:03:03,534 INFO L226 Difference]: Without dead ends: 128 [2024-11-03 14:03:03,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-03 14:03:03,535 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 121 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 14:03:03,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 169 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 14:03:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-03 14:03:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2024-11-03 14:03:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3360655737704918) internal successors, (163), 122 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:03:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 163 transitions. [2024-11-03 14:03:03,557 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 163 transitions. Word has length 93 [2024-11-03 14:03:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:03:03,558 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 163 transitions. [2024-11-03 14:03:03,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:03:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 163 transitions. [2024-11-03 14:03:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-03 14:03:03,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:03:03,559 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:03:03,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 14:03:03,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:03:03,760 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:03:03,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:03:03,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2061868768, now seen corresponding path program 1 times [2024-11-03 14:03:03,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:03:03,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20296697] [2024-11-03 14:03:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:03:03,761 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:03:03,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:03:03,762 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:03:03,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 14:03:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:03:03,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 14:03:03,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:03:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-03 14:03:06,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:03:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-03 14:03:08,951 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:03:08,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20296697] [2024-11-03 14:03:08,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [20296697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:03:08,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:03:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 14:03:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558657983] [2024-11-03 14:03:08,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:03:08,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 14:03:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:03:08,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 14:03:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-03 14:03:08,953 INFO L87 Difference]: Start difference. First operand 123 states and 163 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:03:11,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:03:11,108 INFO L93 Difference]: Finished difference Result 177 states and 239 transitions. [2024-11-03 14:03:11,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 14:03:11,109 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-03 14:03:11,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:03:11,110 INFO L225 Difference]: With dead ends: 177 [2024-11-03 14:03:11,110 INFO L226 Difference]: Without dead ends: 156 [2024-11-03 14:03:11,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-03 14:03:11,111 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 185 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-03 14:03:11,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 222 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-03 14:03:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-03 14:03:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2024-11-03 14:03:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3533333333333333) internal successors, (203), 150 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:03:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 203 transitions. [2024-11-03 14:03:11,121 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 203 transitions. Word has length 99 [2024-11-03 14:03:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:03:11,121 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 203 transitions. [2024-11-03 14:03:11,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:03:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 203 transitions. [2024-11-03 14:03:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-03 14:03:11,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:03:11,123 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:03:11,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Forceful destruction successful, exit code 0 [2024-11-03 14:03:11,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:03:11,325 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:03:11,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:03:11,326 INFO L85 PathProgramCache]: Analyzing trace with hash 93228576, now seen corresponding path program 2 times [2024-11-03 14:03:11,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:03:11,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060049960] [2024-11-03 14:03:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:03:11,326 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:03:11,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:03:11,327 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:03:11,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 14:03:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:03:11,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 14:03:11,415 INFO L278 TraceCheckSpWp]: Computing forward predicates...